Crank Pos Sensor / reference volts???
#31
Are there other vacuum lines I am missing???
#32
Member
You can get a vacuum gauge on Amazon pretty cheep or borrow one from a parts store to see if you actually have one. I had a few small leaks that meat have all contributed to the issue but I fixed too many things at the same time to isolate the issue. One of the leaks was from the throttle body where the shaft rotates. I guess when I cleaned it I cleaned all the grease out too.
#33
ok... finally got some testing done with the oscilloscope:
Both of these sensors are getting proper 5.13v power supply, verified with the multimeter. Grounds are good.
I am getting no square waves from the Cam Pos Sensor.
I am getting square waves from the Crank Pos Sensor but they are not consistent. it puts out 4 sq waves and then skips and then another 4, and this repeats...
Please advise .....
Andy
Both of these sensors are getting proper 5.13v power supply, verified with the multimeter. Grounds are good.
I am getting no square waves from the Cam Pos Sensor.
I am getting square waves from the Crank Pos Sensor but they are not consistent. it puts out 4 sq waves and then skips and then another 4, and this repeats...
Please advise .....
Andy
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Knucklebuster (03-10-2024)
#35
CF Veteran
The cam coil sync sensor thing should have sent a signal as above. Check to make sure it's not a wire, but sounds like it's dead.
#36
CF Veteran
BTW crank signal groups have to be completely contained within cam signals (whether it's -0- or 5 VDC) or "synced".
Can cover later if necessary.
Can cover later if necessary.
#37
#40
#41
CF Veteran
Superimpose CPS on CKS. Each group of 4 CKS signals has to be completely contained within a CPS phase (either -0- or 5 VDC). You cannot have like 3 CPS in a -0- VDC phase and one outside in a 5 VDC phase.
Good:
Bad:
Good:
Bad:
Last edited by Dave51; 03-09-2024 at 03:30 AM.
The following users liked this post:
Knucklebuster (03-10-2024)
#44
Member
#45
I am not seeing any vacuum leaks around the intake manifold. What about this fuel regulator? does it have vacuum hoses?